锚杆钻孔深度必须符合设计要求,不得超过()允许的误差范围。
参考答案:30mm
—By the way, Mary sends her love to you.
—______.
A.Oh, the same to her
B.It’s great
C.That’s very kind of her
D.Thank you ever so much
They have learned about()in recent years.
A.several hundreds English words
B.hundreds of English words
C.hundred of English words
D.several hundred English words